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微细铣削是利用微铣刀在高转速下加工复杂三维结构的制造技术。再生型颤振能引起刀具的严重磨损,降低零件的加工质量,是微细铣削加工面临的主要挑战之一。铣削加工过程中切削系数和系统动态特性的多变影响颤振稳定性。针对该问题,建立了考虑再生效应的微铣削动态铣削力模型和颤振稳定域解析模型,通过模态试验获得机床 - 刀具系统的频响函数,综合使用铣削稳定性判据进行数值分析,获得了颤振稳定域解析解。最后进行了颤振稳定性加工实验,验证了建立的颤振系统动力学模型和颤振解析模型的正确性。
Micro milling is the use of micro-milling at high speed machining complex three-dimensional structure of the manufacturing technology. Regenerative chatter can cause severe tool wear and reduce the machining quality of the part, making it one of the major challenges for microfabrication. Multivariable Impact Flutter Stability of Cutting Coefficients and System Dynamics during Milling. In order to solve this problem, a dynamic milling force model and a flutter stability analysis model considering the regenerative effect are established. The frequency response function of the machine tool-tool system is obtained through modal test. The milling stability criterion is combined to obtain the Analytical Solution of Flutter Stable Domain. Finally, the flutter stability experiment was carried out to verify the correctness of the flutter system dynamic model and flutter analysis model.